Warp beam flange

ABSTRACT

A novel warp beam flange is disclosed which is suitable for a substantially greater axial stressing when a warp beam is filled with yarn. This is possible by ribs extending radially in the outer region and tangentially in the vicinity of the hub and the ribs form branches.

United States Patent [72] Inventors Martin Landolf Lucerne; Rudolf Roth, Reinach; Paul Beuchi,

Gontenschwll; Peter Weber, Menziken, all

- 01, Switzerland {21] AppLNo. 854,116

[22] Filed Aug. 29, 1969 [45] Patented Aug. 17, 1971 [73] Assignee Aluminium AG Menziken Menziken, Switzerland [32] Priority Sept. 2, 1968 [3 3] Switzerland [54] WARP BEAMFLANGE 8 Claims, 2 Drawing Figs.

52 U.S.Cl 242/11s.7 15111 1 01 l 365h75/14 [50] Field of Search 242/] 18.4,

118.6,1l8.61,l18.62,118.7,1l8.8,77.3,77.4, 118.5

[ 5 6 References Cited FOREIGN PATENTS 213,116 3/1924 Great Britain 242/118.5

OTHER REFERENCES Berkenhoff German Printed Application No. 1,201,649 pub. 9/23/1965 242/118.7

Nordrohr German Printed Application No. 1,187,451 Pub. 2/18/1965 242/118.7

Primary Examiner-George F. Mautz AttorneyFlynn & Frishauf ABSTRACT: A novel warp beam flange is disclosed which is suitable for a substantially greater axial stressing when a warp beam is filled with yarn. This is possible by ribs extending radially in the outer region and tangentially in the vicinity of the hub and the ribs form branches.

WARP BEAM FLANGE I The invention relates to a warp beam flange with a ribbed exterior surface.

Appreciable forces act on such warp beam flanges when a warp beam is filled with yarn. These forces try, on the one hand, to compress the barrel in the radial direction and, on the other hand, to force apart axially the laterally arranged warp beam flanges. in order to take up these axial forces and to keep the axial deflection of the flanges small, it is already known to provide the flanges with radial ribs on their exterior side. However, these gave only partial satisfaction in that while they are able to withstand the stress arising during winding of natural fibers such as wool or cotton they did not withstand or were too strongly bent out of position by the much stronger stresses during winding of synthetic fibers. The extent of thickening of the flanges and their ribs as a' remedy is limited for reasons of weight and space.

Accordingly it is a primary object of the invention of making the warp beam flanges suitable for a substantially greater axial stressing. I

Another object of the invention relates to a warp beam flange which is simple and inexpensive to cast and is light in weight.

Subject matter of the invention: Ribs are formedon a disk,

having inner portions extending approximately tangentially with respect to the hub in the latters vicinity and then merging together to be orientated approximately radially in the radial outer region; thus, the ribs form branches inwardly from the outside edge of the flange.

According to the invention, ribs are so arranged that the flux of force transferred between flange and hub is so controlled that the flanges can take up an appreciably higher stress and tend to sag less under a given load with no or only little increase in weight compared with conventional warp beam flanges. v

These and other objects of the invention will become further apparent from the following detailed description,

reference being made to the appended drawings, wherein:

FIG. 1 is a side view ofa warp beam flange,

H6. 2 is a side view of a constructional variant of the warp beam flange.

The warp beam flange 1 preferably consisting of light metal such as aluminum is pushed or lifted with its axially outward projecting hub 2 on a not shown warp beam barrel and held fast with a likewise not shown conventional clamping device. A warp beam flange l is thus seated at either end of a warp beam barrel and the sheet of yarn is wound between them. The hub is integral with a disk; the side of the disk facing the yarn sheet is machined to be smooth, while the exterior side of the warp beam disk is ribbed. The ribs 3 run radially or approximately radially in the vicinity of the outer flange edge 4 and branch or fork into two respective branches, viz a first branch 5 and a second branch 6, making equal angles with rib 3. These two branches 5, 6 of the bifurcated rib are orientated such that their inner ends run tangentially or approximately tangentially with respect to or terminate tangentially or approximately tangentially in hub 2, in contrast to earlier known constructions in which the ribs terminated in the hub strictly radially. The construction of the ribs aims at controlling the direction of flux of force in such a manner that it can enter into hub 2 without an abrupt transition and be led around the bore 9. The branches 5, 6 are slightly curved or bent outwards in the embodiment according to FIG. I. The angle a amounts to 20-55 and preferably is about 30. The points of intersection l0 of the branches 5, 6 lie within the inner half of the disk. The points of intersection 8 of the prolonged central axes of branches 5, 6 merging into the hub adjacent each other lie either within the hub rim structure itself or outside and close to it, but not within the hub opening 9. The radially outermost points of adjacent intersection 10 of branches 5, 6 are at a distance from the center 11 that is less than half the disk radius. Hub, flange and ribs form one single piece, manufacturedb casting.

ln Fl 2 the angle B enclosed by branches 5', 6 is selected to be somewhat greater, viz about 45. As a result it is possible to realize an approximately tangential position of the branches 5, 6, with respect to hub 2 and at the same time a rectilinear course of the branches. The length of the radially orientated rib part as far as the branching point 7 is greater than one third but less than one half the flange ring width, measured between the hub bore 9 and the outer edge of the flange 4. The height of the ribs, i.e. the extent in the axial direction of the flange, increases from-the outer edge of the flange 4 towards the hub 2. Twelve to 18 and preferably 15 uniformly distributed ribs have been found to be suitable.

Various changes and modifications may be made without departing from the spirit and scope of the present invention and it is intended that such obvious changes and modifications be embraced by the annexed claims. Accordingly,

We claim:

1. A warp beam flange comprising a disk, a hub portion centrally in the disk and a rim spaced radially from said hub portion, and a plurality of rib means extending from said rim to said hub portion, said hub portion, disk and rim forming a unitary casting, said rib means extending radially inwardly from said rim towards the hub portion and then branching at a point intermediate the distance between the rib and the hub portion, the branches merging substantially tangentially with the hub portion;

said rib means being spaced around the circumference of the rim the branches of the rib means diverging inwardly at an angle to each other, the adjacent branches of adjacent rib means intersecting each other at at least one point spaced from the hub portion, and the point of merger of a branch with the hub portion is closely adjacent and spaced from the point of merger of a branch of another rib means with the hub portion.

2. A warp beam flange according to claim 1 wherein the branches merge into the hub portion in such a configuration that the points of intersection of the force vectors of forces transmitted from the branches to the hub portion lie within the hub portion or just outside thereof, but do not intersect within the bore of the hub portion.

3. A warp beam flange as defined in claim 1, wherein points of intersection of the prolonged central axes of the branches lie within the hub portion itself.

4. A warp beam flange as defined in claim 1, wherein the points of branching of the rib means is located slightly beyond half of the flange radius.

5. A warp beam flange as defined in claim 1, wherein the angle enclosed by the branches in the region of the branching point is about 205 5.

6. A warp-beam flange as defined in claim 5, wherein the angle enclosed by the branches in the region of the branching point is about 25-35 and the branches are gently curved.

7. A warp beam flange as defined in claim 5, wherein each branch intersects not more than three other branches; and i2 to 18 ribs are provided, uniformly distributed over the flange.

8. A warp beam flange as defined in claim 1, wherein the radially outermost points of intersection between the branches are radially spaced from the flange center by an amount less than half the flange radius and the points of branching are located outside the half flange radius. 

1. A warp beam flange comprising a disk, a hub portion centrally in the disk and a rim spaced radially from said hub portion, and a plurality of rib means extending from said rim to said hub portion, said hub portion, disk and rim forming a unitary casting, said rib means extending radially inwardly from said rim towards the hub portion and then branching at a point intermediate the distance between the rib and the hub portion, the branches merging substantially tangentially with the hub portion; said rib means being spaced around the circumference of the rim the branches of the rib means diverging inwardly at an angle to each other, the adjacent branches of adjacent rib means intersecting each other at at least one point spaced from the hub portion, and the point of merger of a branch with the hub portion is closely adjacent and spaced from the point of merger of a branch of another rib means with the hub portion.
 2. A warp beam flange according to claim 1 wherein the branches merge into the hub portion in such a configuration that the points of intersection of the force vectors of forces transmitted from the branches to the hub portion lie within the hub portion or just outside thereof, but do not intersect within the bore of the hub portion.
 3. A warp beam flange as defined in claim 1, wherein points of intersection of the prolonged central axes of the branches lie within the hub portion itself.
 4. A warp beam flange as defined in claim 1, wherein the points of branching of the rib means is located slightly beyond half of the flange radius.
 5. A warp beam flange as defined in claim 1, wherein the angle enclosed by the branches in the region of the branching point is about 20* - 55* .
 6. A warp beam flange as defined in claim 5, wherein the angle enclosed by the branches in the region of the branching point is about 25* - 35* and the branches are gently curved.
 7. A warp beam flange as defined in claim 5, wherein each branch intersects not more than three other branches; and 12 to 18 ribs are provided, uniformly distributed over the flange.
 8. A warp beam flange as defined in claim 1, wherein the radially outermost points of intersection between the branches are radially spaced from the flange center by an amount less than half the flange radius and the points of branching are located outside the half flange radius. 